Bottle cap



FIG. 1 is a top perspective view of a bottle cap, showing the new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left-side elevational view thereof, the right-side elevational view being a mirror image thereof;

FIG. 6 is a cross-sectional view thereof, taken generally along lines 6-6 of FIG. 3;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines showing a logo in FIG. 1 depict environmental matter, and form no part of the claimed design. 

What is claimed is the ornamental design for a bottle cap, as shown and described. 